RE: [alfa] gtv6 O2 sensor question

["Peter Webb" <webb.p@xxxxxxxxxxx>]

> Are there typical symptoms to a failed/worn out O2 sensor?
>
> Our race car seems just a bit flat, despite recent rebuild.
> After the rebuild it smoked quite a bit for the first couple of
> runs, then no
> smoke at all, very little(normal) oil consumption.  Might oil
> have permanently
> fouled the sensor?

Yes, oil can easily foul the sensor.  The typical failure mode of an O2
sensor is slow response where it won't oscilate to the ECU as it should.  On
a race car, open up the TPS and short it to WOT forcing the car into
open-loop mode all the time and bypassing the O2 sensor totally.

-Peter
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